Here you can find the source of readTextFile(File f)
public static String readTextFile(File f) throws IOException
//package com.java2s; /*//from ww w . j av a2s .c o m * ==================================================================== * Copyright 2001-2013 Andre Charles Legendre <andre.legendre@kalimasystems.org> * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. * ==================================================================== */ import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static String readTextFile(File f) throws IOException { StringBuffer buf = new StringBuffer(); BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(f))); String inputLine; while ((inputLine = in.readLine()) != null) { buf.append(inputLine); buf.append('\n'); } in.close(); return buf.toString(); } }